Improvement in lock-ntrts



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' "'P'TENTED 99315 FEB 1r |870 f 2 .aw. F

filmx@ v @mi @um omero. H ERMNCEQ or CLAVERACK, :NEW Your;

IMPROVEMENT 1N Loca-NUTS- 'l'he Soh'edule referrenfon these LetteraPatent and making parl: of the lerne.

j' "I, GARET G,HERRMANCE,ofthe townof01averaok, in the county ofGolumbia., andStete'j of NewYork, have invented certain Improvements in-'the` Devices of Lo'okingthe Nuts of Serews, ofvwhioh-thefollowingisspenifivawr v Nature-@no objeezofthtrnventm; 1 The firstpartofmy 4inver'ltiong-elett:'sf-to the combi-4 nation o f arlointed'settiug-seiewinnd the nutio'' u screw, in s lvlloh zi. manner that -thesaid 'pointedsettingscrew looks z thenut o f 2, sorew et any requiredplace y liheseoond part'of my invention `relates"tothefoo'mhination ofa, movahle and pointedpiece of metal and' Athe-nut.o f'a s c'rew,-insuch mannerthatthe sitid piece of .movable and pointedmetaL-heing-foreed-down1permanently and f continuously by asetting-sorew,"locks and-thelookng-sorew ),'enibodying my invention."Figur'e2 isav section off-a, nut thescreiandthe looking-screw O..Figure isfa. View ofthe looking-screw C, shown -at v.'Gnus-1 1;:ma.2.'Figure 4 is anothersecton of nut'A,`^ showing the screw B,thelooking-screiv (hand the movable point D.

- Figure'-represents the movable point I), shown et i -I'clainnnsrnyinven'tion l I make Atheserew B,' g 1; als itV is now made, and` Ialso make itsnut A, lig. 1,'asv it is nowmade.A I'.

1 Af," and also showing ing ai corresponding thread ontthereon, andtheol :screw it 'down until itssh 1p point impinges upon the' screw B,fig. 2,hetween i threads, tolook its uut A,' gl, at the required placeor point. l r v. When I wish -to move the-nut A, fig. 1, I unlock;

it Vby unsorewing suloi'ently the looking-screw C, figs.' "l!and2. I

I make the head of'. the locking-screw 0,`iig.' 3,` off dierent lshglpeor form, as the heads of :id justeble or setting-screws are now made.v

- I makethe point ofthe looking-screw 0,'35so1 pointedthat it will :passmore or less betweenthef threads of sorew. B, lig; 2.

Whenv I lookV @large nut,I sometimes drill a hole,-`F

perpendloulaily through the nut A, lig. 4, about three# fourths of itsthickness, and of the dia'imeter required brfthe-lookin'g-sorew C, fig.6. I then cut a. screwthread in sfld hole, to receivev the looking-screwC, fig. (i.l I'then drill'a hole of less diameter through theremainingport. of the uut A, fig. 4, and put therein the --movzthle point D, fig.5, to be forced down by the lookng-screw C, Iig. 4,`to look'nut A, iig.4, vsubstzmtially as lrnd for the purpose hereinhefore set forth. Y

I make the movable point'D, iig. 5, with n flange, so that when I put.it in its plae, fig. 4, and I screw the lookingscrew C, fig. 6,int-o'its place,iig. 4, the said movable point D, fig. 4, cannot fallout when 'the nut A, lig. 4, vis unlookedand removed from sorew'D, iig'.4.

1. 'lhe combination of thefpointed locking-sorew C herein set fort-h andthenut A, substantially es' and forl the purpose- '2. The combinationof' the vnut A with the movable endponted peceD and lthe looking-screwC, suhsten,A

' tially as und for the purpose herein set forth.

HERMAN G. HEERMANCE.

